Multi-head push button, Illuminated, Flat green, Protruding red, 1 NO + 1 NC Harmony XB4 XB4BL734155

Control button – reliability and functionality in every circuit

This double-button control unit from the Harmony XB4 series is a robust solution for industrial and commercial applications. The combination of a green flush and a red protruding button provides intuitive operation and quick identification of functions. The design with a single normally open (1NO) and a single normally closed (1NC) contact allows for flexible use in various control circuits.

Construction and application

The button is designed for mounting in 22.5 mm diameter holes, and the chrome front ring adds an aesthetic look and provides additional protection. The metal front ring guarantees durability even in harsh working conditions. Thanks to the high degree of protection IP67/IP69K and compliance with NEMA 4X and 13 standards, the button is resistant to dust and water ingress, making it an ideal choice for applications in wet or dusty environments. The self-resetting mechanism ensures immediate operation after the button is released, which is crucial in applications requiring precision and speed of response.

Key features and benefits

• Versatility: The combination of NO/NC contacts allows use in control, signaling and safety circuits.
• Durability: The metal front ring and high degree of protection IP67/IP69K ensure long-term reliability even in demanding industrial conditions.
• Intuitive operation: Distinct button colors – green and red – make it easy to identify functions and minimize the risk of operating errors.
• Easy installation: The standard hole diameter (22.5 mm) facilitates integration with existing control panels.
• Resistance to external factors: Compliance with IP67/IP69K and NEMA 4X/13 standards guarantees protection against dust, water and other contaminants.
• Safety: The design meeting stringent safety standards ensures safe operation of the device and protects personnel.
• Wide range of applications: Ideal for machines, production equipment, automation systems and other industrial applications.